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regulation vocabular

QuestionAnswer
regulation controls the amount and direction of responses, maintains homeostasis
stimulus something that causes a change in the organims which causes a change in the organsism
neuron send eletrical and chemical impulses and are transmitted only among the cell memebrane
impulse a sudden involuntary urge to do something
effector body parts that cause a change in the environement which creates a change in an organism
Receptors- specialized structures sensitive to certain types of stimuli
Response action resulting from the stimulus
Neurotransmitters are brain chemicals that allow transmission of signals from one neuron to another
Irritability ability of a cell to respond to its environment
Dendrites- hair like structures which receive impulses first
Cyton (cell body)- contains the nucleus and other organelles . it is the site of metabolic activity
Axon- long thin structures that carries impulses away from cell body to an effector
Hormones chemical messengers that are manufactured by the endocrine glands
Glands- - organs that secrete substances in and out of the body
Target cells/tissues/organs- hormones
Hypothalamus releases hormones when information is received from the nervous system
Hyposecretion too little hormone is secreted
Hypersecretion- too much hormone is secreted
Feedback mechanism -one change causes another change
Reflex automatic response to a sensory stimulus
Cerebrum- is the largest part of the brain and contains memory, , thought, analyzing and the senses
Cerebellum means little brain and maintains balance and controls all voluntary and some involuntary activities
Medulla oblongata- - lowest part of the brain and controls many involuntary activities
Created by: janelmartinez